/**
 * ***************************************************************************** Copyright (c) 2004,
 * 2006 Subclipse project and others. All rights reserved. This program and the accompanying
 * materials are made available under the terms of the Eclipse Public License v1.0 which accompanies
 * this distribution, and is available at http://www.eclipse.org/legal/epl-v10.html
 *
 * <p>Contributors: Subclipse project committers - initial API and implementation
 * ****************************************************************************
 */
package org.tigris.subversion.subclipse.ui.operations;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.jobs.ISchedulingRule;
import org.eclipse.swt.widgets.Display;
import org.eclipse.team.core.TeamException;
import org.eclipse.ui.IWorkbenchPart;
import org.tigris.subversion.subclipse.core.ISVNCoreConstants;
import org.tigris.subversion.subclipse.core.SVNException;
import org.tigris.subversion.subclipse.core.SVNTeamProvider;
import org.tigris.subversion.subclipse.core.commands.SwitchToUrlCommand;
import org.tigris.subversion.subclipse.core.sync.SVNWorkspaceSubscriber;
import org.tigris.subversion.subclipse.ui.Policy;
import org.tigris.subversion.subclipse.ui.SVNUIPlugin;
import org.tigris.subversion.subclipse.ui.conflicts.SVNConflictResolver;
import org.tigris.subversion.subclipse.ui.decorator.SVNLightweightDecorator;
import org.tigris.subversion.svnclientadapter.ISVNConflictResolver;
import org.tigris.subversion.svnclientadapter.SVNRevision;
import org.tigris.subversion.svnclientadapter.SVNUrl;

public class SwitchOperation extends RepositoryProviderOperation {
  private SVNRevision svnRevision;
  private HashMap<IResource, SVNUrl> urlMap = new HashMap<IResource, SVNUrl>();

  private int depth = ISVNCoreConstants.DEPTH_UNKNOWN;
  private boolean setDepth = false;
  private boolean ignoreExternals = false;
  private boolean force = true;
  private boolean ignoreAncestry = false;
  private boolean canRunAsJob = true;
  private ISVNConflictResolver conflictResolver;

  public SwitchOperation(
      IWorkbenchPart part, IResource[] resources, SVNUrl[] svnUrls, SVNRevision svnRevision) {
    super(part, resources);
    this.svnRevision = svnRevision;
    for (int i = 0; i < resources.length; i++) urlMap.put(resources[i], svnUrls[i]);
  }

  protected String getTaskName() {
    return Policy.bind("SwitchOperation.taskName"); // $NON-NLS-1$;
  }

  protected String getTaskName(SVNTeamProvider provider) {
    return Policy.bind("SwitchOperation.0", provider.getProject().getName()); // $NON-NLS-1$
  }

  protected void execute(SVNTeamProvider provider, IResource[] resources, IProgressMonitor monitor)
      throws SVNException, InterruptedException {
    monitor.beginTask("Switch to Branch/Tag", resources.length);
    try {
      final List<IProject> projectList = new ArrayList<IProject>();
      for (int i = 0; i < resources.length; i++) {
        monitor.subTask("Switching " + resources[i].getName() + ". . .");
        SVNUrl svnUrl = (SVNUrl) urlMap.get(resources[i]);
        if (conflictResolver != null && conflictResolver instanceof SVNConflictResolver) {
          ((SVNConflictResolver) conflictResolver).setPart(getPart());
        }
        SVNWorkspaceSubscriber.getInstance().updateRemote(resources);
        SwitchToUrlCommand command =
            new SwitchToUrlCommand(
                provider.getSVNWorkspaceRoot(), resources[i], svnUrl, svnRevision);
        command.setDepth(depth);
        command.setSetDepth(setDepth);
        command.setIgnoreExternals(ignoreExternals);
        command.setForce(force);
        command.setIgnoreAncestry(ignoreAncestry);
        command.setConflictResolver(conflictResolver);
        command.run(monitor);
        monitor.worked(1);
        if (resources[i].getProject() != null && !projectList.contains(resources[i].getProject())) {
          projectList.add(resources[i].getProject());
        }
      }
      // Trigger lightweight refresh of decorators for project.  This is needed because refreshLocal
      // is not triggering a refresh for unchanged
      // resources in Project Explorer.
      Display.getDefault()
          .asyncExec(
              new Runnable() {
                public void run() {
                  SVNLightweightDecorator decorator =
                      (SVNLightweightDecorator)
                          SVNUIPlugin.getPlugin()
                              .getWorkbench()
                              .getDecoratorManager()
                              .getBaseLabelProvider(SVNUIPlugin.DECORATOR_ID);
                  for (IProject project : projectList) {
                    decorator.refresh(project);
                  }
                }
              });
    } catch (SVNException e) {
      if (e.operationInterrupted()) {
        showCancelledMessage();
      } else {
        collectStatus(e.getStatus());
      }
    } catch (TeamException e) {
      collectStatus(e.getStatus());
    } finally {
      monitor.done();
    }
  }

  protected boolean canRunAsJob() {
    return canRunAsJob;
  }

  public void setDepth(int depth) {
    this.depth = depth;
  }

  public void setSetDepth(boolean setDepth) {
    this.setDepth = setDepth;
  }

  public void setIgnoreExternals(boolean ignoreExternals) {
    this.ignoreExternals = ignoreExternals;
  }

  public void setForce(boolean force) {
    this.force = force;
  }

  public void setIgnoreAncestry(boolean ignoreAncestry) {
    this.ignoreAncestry = ignoreAncestry;
  }

  public void setCanRunAsJob(boolean canRunAsJob) {
    this.canRunAsJob = canRunAsJob;
  }

  public void setConflictResolver(ISVNConflictResolver conflictResolver) {
    this.conflictResolver = conflictResolver;
  }

  protected ISchedulingRule getSchedulingRule(SVNTeamProvider provider) {
    return null;
  }
}
